com·post /ˈkɑmˌpost, ||ˌpɑst/
  混合物,堆肥(vt.)施堆肥
  Com·post n.
  1. A mixture; a compound. [R.]
     A sad compost of more bitter than sweet.   --Hammond.
  2. Agric. A mixture for fertilizing land; esp., a composition of various substances (as muck, mold, lime, and stable manure) thoroughly mingled and decomposed, as in a compost heap.
  And do not spread the compost on the weeds
  To make them ranker.   --Shak.
  Com·post, v. t.
  1. To manure with compost.
  2. To mingle, as different fertilizing substances, in a mass where they will decompose and form into a compost.
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  compost
       n : a mixture of decaying vegetation and manure; used as a
           fertilizer
       v : convert to compost; "compost organic debris"